import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
      home: Scaffold(
    appBar: AppBar(
      title: const Text("你好flutter"),
    ),
    body: const MyApp(),
  )));
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return Center(
      child: Container(
        alignment: Alignment.center,
        width: 200,
        height: 200,
        decoration: const BoxDecoration(
          color: Colors.yellow,
        ),
        child: const Text(
          "你好",
          style: TextStyle(fontSize: 20),
        ),
      ),
    );
  }
}
